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Effect of INR on Outcomes of Endovascular Treatment for Acute Vertebrobasilar Artery Occlusion
This study aimed to analyze the effects of international normalized ratio (INR) indicators on outcomes in patients with acute VBAO treated with EVT. Dynamic data on INR in patients with VBAO who received endovascular treatment (EVT) at 65 stroke centers in China were retrospectively enrolled. Outcome measures included the modified Rankin Scale (mRS) score at 90  days and 1 year and symptomatic intracranial hemorrhage (sICH). The associations between elevated INR (INR >  1.1), INR variability (time-weighted variance of INR changes), and various clinical outcomes were analyzed in all patients and subgroups stratifie...
Source: Translational Stroke Research - July 13, 2023 Category: Neurology Source Type: research

Left Atrial Appendage Closure for Patients with Cerebral Amyloid Angiopathy and Atrial Fibrillation: the LAA-CAA Cohort
AbstractAnticoagulation increases the risk of intracerebral hemorrhage (ICH) in patients with cerebral amyloid angiopathy (CAA), so the management of stroke-risk in patients with both atrial fibrillation (AF) and CAA is controversial. Advances in left atrial appendage closure (LAAC) techniques provide a stroke-risk-reduction option which avoids long-term oral anticoagulation (OAC). We aimed to evaluate the safety of this intervention in patients with CAA. This is an observational cohort study of patients with severe CAA (with or without ICH) and AF who were treated with LAA closure. The Watchman ™ and Amulet® LAAC devic...
Source: Translational Stroke Research - August 6, 2020 Category: Neurology Source Type: research

Prolonged Blood-Brain Barrier Injury Occurs After Experimental Intracerebral Hemorrhage and Is Not Acutely Associated with Additional Bleeding
AbstractIntracerebral hemorrhage (ICH) causes blood-brain barrier (BBB) damage along with altered element levels in the brain. BBB permeability was quantified at 3, 7, and 14  days with Evans Blue dye after collagenase-induced ICH in rat. At peak permeability (day 3), a gadolinium (Gd)-based contrast agent was injected to further characterize BBB disruption, and X-ray fluorescence imaging (XFI) was used to map Gd, Fe, Cl, and other elements. XFI revealed that Ca, Cl, Gd , and Fe concentrations were significantly elevated, whereas K was significantly decreased. Therefore, using Gd-XFI, we co-determined BBB dysfunction with...
Source: Translational Stroke Research - June 14, 2018 Category: Neurology Source Type: research

Warfarin Pretreatment Reduces Cell Death and MMP-9 Activity in Experimental Intracerebral Hemorrhage
Abstract Little is known about the pathophysiology of oral anticoagulation-associated intracerebral hemorrhage (OAC-ICH). We compared hematoma volume, number of terminal deoxynucleotidyl dUTP nick-end labeling (TUNEL)-positive cells (indicating cell death), MMP-9 levels, and perilesional edema formation between warfarin-treated mice and controls. Intracerebral hemorrhage was induced by an injection of collagenase into the right striatum. Twenty-four hours later, hematoma volume was measured using a photometric hemoglobin assay. Cell death was quantified using TUNEL staining. MMP-9 levels were determined by zymogra...
Source: Translational Stroke Research - November 27, 2014 Category: Neurology Source Type: research